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Finding the Fourth Proportional to 658.99, 909.40 and 364.27

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Solution

The fourth proportional to 658.99, 909.40 and 364.27 is: 502.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.99 : 909.40 = 364.27 : x
  2. Step 2: Convert to fraction form
    658.99/909.40 = 364.27/x
  3. Step 3: Cross multiply
    658.99x = 909.40 × 364.27
  4. Step 4: Simplify right side
    658.99x = 331,267.14
  5. Step 5: Solve for x
    x = 331,267.14/658.99
  6. Step 6: Final answer
    x = 502.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.